CAJ | 학술논문

采用CFD技术对敞开式跑道池光生物反应器流场进行了研究,考察了导流板结构、跑道池底部进气孔长度和宽度方向间距对流场的影响规律。结果表明,当内外导流板均为180°、导流板延伸长度ΔL/W为0.5时,跑道池平均速率最大,死区比例最小,功率输入最少;当宽度方向间距ΔY/W1为1/4、长度方向间距ΔX/L1为0.025时,平均光照方向速率最大。采用粒子追踪模型,分别计算不通气与通气情况下粒子的运动轨迹,分析得到藻细胞的光照强度、光暗交替频率。
채용CFD기술대창개식포도지광생물반응기류장진행료연구,고찰료도류판결구、포도지저부진기공장도화관도방향간거대류장적영향규률。결과표명,당내외도류판균위180°、도류판연신장도ΔL/W위0.5시,포도지평균속솔최대,사구비례최소,공솔수입최소;당관도방향간거ΔY/W1위1/4、장도방향간거ΔX/L1위0.025시,평균광조방향속솔최대。채용입자추종모형,분별계산불통기여통기정황하입자적운동궤적,분석득도조세포적광조강도、광암교체빈솔。
The flow profile in an open raceway photo-bioreactor was studied by employing computational fluid dynamics （CFD） . The effects of the inducing baffle structure, air inlets spacing along length direction and width direction were investigated. The calculated results showed that an open raceway photo-bioreactor has maximum velocity, minimum dead zone ratio and minimum power input when the inducing baffles angles are 180° , and extending length AL/W is 0.5. The average velocity magnitude along the light direction is maximum when the spacing along width direction AY/Wt is 1/4, and the spacing along length direction AX/L1 is 0.025. Light intensity, light and dark frequency of algal cells are derived from particle trajectories with and without air by employing particle tracking model （PTM）.